Class RingGSWAccumulatorCGGI

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Inheritance Relationships

Base Type

Class Documentation

class lbcrypto::RingGSWAccumulatorCGGI : public lbcrypto::RingGSWAccumulator

Inheritence diagram for lbcrypto::RingGSWAccumulatorCGGI:

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Collaboration diagram for lbcrypto::RingGSWAccumulatorCGGI:

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Ring GSW accumulator schemes described in https://eprint.iacr.org/2018/421.pdf and https://eprint.iacr.org/2020/086.

Public Functions

RingGSWAccumulatorCGGI() = default
virtual RingGSWACCKey KeyGenAcc(const std::shared_ptr<RingGSWCryptoParams> &params, const NativePoly &skNTT, ConstLWEPrivateKey &LWEsk) const override

Key generation for internal Ring GSW as described in https://eprint.iacr.org/2018/421.pdf

Parameters

  • params – a shared pointer to RingGSW scheme parameters

  • skNTT – secret key polynomial in the EVALUATION representation

  • LWEsk – the secret key

Returns

a shared pointer to the resulting keys

virtual void EvalAcc(const std::shared_ptr<RingGSWCryptoParams> &params, ConstRingGSWACCKey &ek, RLWECiphertext &acc, const NativeVector &a) const override

Main accumulator function used in bootstrapping - GINX variant

Parameters

  • params – a shared pointer to RingGSW scheme parameters

  • ek – the accumulator key

  • acc – previous value of the accumulator

  • a – value to update the accumulator with